Deep-well pump



Oct. I3, 1925- D. F. JOHNS DEEP WELL PUMP Filed oct. 17, 1924 PatentedOct. 13, 1925.

- UNITED sm'rns DONALD AFRAN-K JOHNS, or MAR-Icone, cAIiIroRNIA.

nnen-WELL PUMP.

Appiifcatioir med october 1v, 1951. semi mi. 944,151.

To all whom t lmay conccrln.'

Be it knownl that I, DoNALD'F. Jorrit-ma citizen of the United States,residing in Maricopa,` in the county of Kern, State of California, haveinvented a new and useful vDeep-Tell Pump, or `which the' following isal specification.

This invention relates to-deepwvellpumps, and particularly to that typeofl pump in which a pump barrel-or liner is ylovvere'd into the flowpipe on the pump rod, the liner being, provided. withv means foranchoring it at the desired depth vvithin the rlovv pipe. The generalobject of this invelr'itionA is'to provide improved means for effectingthe anchoring'of the liner when it arrives at the desired depth, and theimprovement involves the Acooperating construction of the 'flow "pipeandA liner g-it is' also an object of' the invention to Provideimprovedmeans forA packingjthev4 liner,- against the Wall of* the `loivpipe and thereby develop aconsiderableresistance to longitudinalmovement or the liner in thel ii'o'vv pipe, my. general purpose being',inV this. connection', to relieve the Iatching'device of" a large partofptlie'up-L thrust which? the. pump piston would otherwise transmitthrougi'i 'the liner to; the. latchin'g device in other Words, one orthe 'functions of my linerpacknjg is to relieve the stress on' thelatching device.

Further' objects of the' invention ivill ape pear' hereinafter. y

The'invention' consistsin the novel parts and@ combi-natonuof "parts tobe described hereinafter, all of' whichy ontrbu'te to pro'- duceaneiricient deep-*Well pump;

preferred. embodiment ofithe invention is described in' the followingspecification', While the broad.v scope ory the invention is' pointedout in the 'appended claims'.

Fig; l'is a vertical sectio'nthrou'gh' acasingand .flow pipe, brokenaway, and illus# trati'ng' the` general arrangement of all of the parteori-,he invention. A` FigQ" is @al viewsi'milartoFigure 1`,`bu`t upon anenlarged' scale, Eand. illustratfir'ig-. the` construction gf' thefloiv" pipe, `the latcl'ring means andthe packing means; This" vi'evv'shows the latching device in its latchingLposixtion, that is to say,Yitsh'ovs the parts 4of this devicein the relation they have when VWellcasing' within'which e, new pipe 2 is located.

Within the iiovv'pipeither'e is provided a liner 3, the lovver portion 4of vvh-ic'h operates as' a" pump barrel in -vv'liich the piirnp piston 5recipr'ocates. I providel means `for lashing the nner inv the new pipe;nidi uns means preferably includes a' la'tching device 6 (Se Figureincliiding a dog, but preferably two dogs which are guidedout- War'dlyin' openingsinthe Wall theliHe-r,

'the outer end of each dogfhavig' an in,

When the new pipe 21 is eenstnicted, l connect init a specialconnectin'orf tube 9 which is provided with engaging niean's'or'socket-means' to cooperate fvvith'the: latch device. In the presentinstance thisengag-r ing ineans' is in :the forni of a! circumferentialgroove l0 which" has an" annirlar" horizontal Shoulder 11l er its-eideto eocperateniththe upper sides' of the latches `"o'r' dogs 7`to"prevent the'lin'er from being movedup'vvar'dly bythe'uptvardn'iovement o'ffthe ptrnip pis-` ton 5, eterrthe' liner'hasbeen anchored. The latches ordogs2 7 are contrbllefdby actu-4 atingmembers" 12",v e'ac'hof vvhich' is'I in the' form of a leverI`4pivotedon a horizontal rocker 'pin lrnounted inthe adjacerrtporl tionofthe liner below the' d'ogs,and'th'ese actuating levers' are` providedivithmea'ns t'o" actuate` the' latchingdevi'cel intoits engagingposition.' In the" present instance this means'is in the' forni or`t`\voleaf springs 14 V attached respectively t0 the" lovvervends of the'ylevers I2 and, thrnsting against"i the inner face" off :the Wallof't'helin'er, ,see Figi-L 111162" l Y The pump rod 15, vvhich isdisposed vvith'- in the iiow pipe and which extends down from the mouthof the wall, is provided with suitable means to engage the latchingdevice tohold the same in its retracted position while the liner isbeing lowered within the flow pipe. For this purpose, I provide thelower end of the pump rod with a mandrel 16, the upper end of which isformed into a tapered portion or substantially conical nose 17. Thisnose, being formed adjacent the rod, of Course engages the inner sidesof the levers.

When the liner is being lowered into the well, this conical nose is inengagement with heads 18 which are formed at the lower ends of thelevers 12, see Figure 3. This operates to hold the levers so that theyincline inwardly at their upper ends and hold the dogs 7 in a retractedposition. Each dog 7 is formed with a head 19 and the upper end of eachlever is bifurcated to engage the dog adjacent the head.

I provide cooperating engaging means between the liner and the flow pipepreferably located above the socket means 10, to stop the liner when thelatching device comes into alignment with the cooperating engaging meansof the flow pipe, that is to say, Vthe circumferential groove 10. Forthis purpose I provide a shoulder within the iiow pipe which engages acorresponding shoulder on the liner. In the present instance, I employ abushing 2() (see Figure 3) which is countersunk in the inner face of theliner and provided on its' inner face with an annular shoulder 21. Theliner is vprovided on its outer side with an annular shoulder ,22, whichengages the shoulder 21 as the liner descends through the flow pipe.During this descent, the liner is supported through the agency of thelevers 12, the heads 18 of which rest onthe conical end 17 of themandrel, Figure 3 shows the relation of the parts while the pump rod andliner are being lowered. As soon as the shoulder 22 strikes the'shoulder 21, the downward movement ofthe liner stops and when thisoccurs the dogs 7 will be in alignment with the groove 10; then afurtherdownward movement of the pump rod will carry the conical end 17 downpast the heads 18 and the springs 14 will then operate the levers 12 toforce the dogs out into engagement with the groove 10 and under theshoulder 11. The inclined end face 8 of each dog 7 enables it to slipreadily past the shoulder 21. Each dog may be provided with a cross pin23 or a collar to receive the outward thrust of the adjacent forked endof thelever when the lever is forcing the dog outwardly. v

At the lower end of the liner a foot valve 24 is carried, past which theoil or other liquid Hows upwardly into the lower end of piston 5 carriesa lower valve 25 and the upper end of the piston carries an upper valve26. The piston 5 is tubular so that its bore 27 operates as a duct topermit upward iiow of the liquid in the piston on each down stroke ofthe pump. The oil that passes upwardly above the upper valve 26 is thenforced up at each upstroke through the upper portion of the liner andpast the mandrel 16. About opposite the mandrel and below the latchingdevice I provide packing means for packing the liner within the flowpipe. This packing prevents leakage of oil down past the liner, but italso performs the function of fixing the liner to the iiow pipe, so thata large part of the upward thrust on the liner, caused by the upwardmovement of the piston, will be taken up at this point, and this reducesthe upwardthrust which would otherwise be transmitted to the latches 7.In providing for this packing, I provide a special coupling 28 (seeFigure 2), the lower end of which is secured to the upper end of thepump barrel, and thel upper end of which is attached to a packing sleeve29. The upper end ofthis packing sleeve is attached to the upper section30 of the liner, which carries the latching device.

The sleeve 29 carries a soft packing ring 31 on its outer side and Iprovide means for admitting the liquid pressure to the inner face of thesoft packing ring 31 so as to press it out forcibly against the innerface .ofthe wall of the flow pipe. For this purpose I provide the outerside of the sleeve 29 with a circumferential groove 32 whichcommunicates with the interior of the sleeve through one or moreopenings 32a.

With this construction, ,it will be evident that the liquid pressure dueto the head of the liquid in the flow pipe, will press the soft packingoutwardly. In order to hold the soft packing in place at each end, thecoupling 28 is provided with an overhanging annular flange 33, whichprojects over the lower end of the packing ring, which is of reduceddiameter at this point. In a similar manner, at the upper end of thesleeve 29 I provide a ring 34 which is threaded on the upper end of thesleeve,and this ring has a iiange 35 at its lower end which engages overa similar reduced end at the upper end of the packing ring. The packingring 31 is preferably made yof soft rubber. It is understood that theIembodiment of the invention described herein is only one of the manyembodiments this invention may take, and I do not wish tobe limited inthe practice of the invention, nor in the claims, to the particularembodiment set forth. y

What I claim is Y Y 1. In a pump for deep wells, the combination otr alinerfa flow-pipe having aybore receivingV the liner, f a -latchvdeviceincluding apdog mounted-on the liner to.r anchor it in the flow-pipe,said {low-pipe having socket means to cooperate with the latch-.devicein anchoringthe liner, actuating means. for the latch-device with meanstor moving the latch device into its engaging: position, a pump-rodhaving a mandrel cooperating with the actuating means to hold thelatchdevice in its retracted position in lowering the liner within theflow-pipe, said liner and said flow-pipe having cooperating engagingmeans located above the said socket means, for stopping the downwardmovement of the liner when the latch device is opposite to the saidsocket-means of the flow-pipe, said actuating means for the latch-deviceoperating upon a further downward movement of the pump-rod to permit thelatchdevice to engage the socket-means and thereby anchor the liner inthe flow-pipe, said dog having an inclined outer face enabling the sameto pass the engaging means on the l'low pipe.

2. In a pump for deep wells, the combination of a liner, a How-pipehaving a bore receiving the liner, a latch-device having a plurality oflatching levers extending longitudinally of the liner mounted on the.

liner to anchor it in the flow-pipe, said flow-pipe having socket meansto cooperate with the latch-device in anchoring the liner, actuatingmeans for the latch-device with means for moving the latch device intoits engaging position, a pump-rod having a mandrel with a taperedportion adjacent the rod, having a face to engage the levers on theirinner sides, and cooperating with the levers and the actuating means tohold the latch-device in its retracted position in lowering the linerwithin the flow-pipe, a bushing mounted in said How-pipe and having ashoulder, said liner having a shoulder cooperating with the first namedshoulder to stop the. downward movement of the liner when thelatch-device is opposite to the said socket-means of the flow-pipe, saidactuating means for the latch-device operating, upon a further downwardmovement of the pump rod, to permit the latch-device to engage thesocket-means and thereby anchor the liner in the flow-pipe.

3. In a pump for deep wells, the combination of a liner, a flow-pipehaving a bore receiving the liner, a latch-device mounted on the linerto anchor it in the flow-pipe, said flow-pipe having socket means tocooperate with the latch-device in anchoring the liner, actuating meansfor the latchdevice with means for moving the latch device into itsengaging position, a pump-rod having a mandrel with a substantiallyconical face engaging with the actuating means and located adjacent therod to hold the latch-.device in `its retracted position: inflow-4 eringthe liner within the flow-pipe, a bush.`

ing mounted in the flow-pipe, a coupling connected in the flow-pipe"retaining the bushing, said bushing havinga shoulder fand said linerhaving a shoulder to cooperate with` the `first named shoulder to 'stoptthe downward movement of the linerwhen the latch device is opposite tothe said socket means, said actuating means for the latch deviceoperating, upon a further downward movement of the pump rod, to permitthe latch-device to engage the socket means and thereby anchor the linerin the flow-pipe.

4. In a pump for deep wells, the combination of a liner, a flow-pipehaving a bore receiving the liner, `a pump-rod, means controlled by thepump-rod for latching the liner within the flow-pipe, a piston carriedby the pump rod to reciprocate within the liner, said liner including atubular packing sleeve, the interior whereof receives the liquid beingpumped, said sleeve having an opening through the wall thereof, a softpacking ring surrounding the sleeve at the said opening so that theliquid pressure within the sleeve forces the soft packing ring againstthe wall of the flow-pipe, and means for securing the ends of the softpacking ring.

5. In a pump for deep wells, the combination of a liner, a flow-pipehaving a bore receiving the liner and having a circumv ferential grooveon the inner face of its wall, a latch-device having movable engagingdogs mounted on the liner to engage the said groove and anchor the linerin the flow-pipe, actuating members for the dogs with means to move thedogs into their engaging position, a pump-rod having a piston with amandrel having a substantially conical face adjacent the pump-rod abovethe piston engaging the latch-device and cooperating with the actuatingmembers to hold the dogs retracted in lowering the liner within theflow-pipe, said liner and said flow-pipe having shoulders respectivelyoperating to engage each other and stop the downward movement of theliner when the dogs are in alignment with the said groove, saidactuating members for the dogs operating upon a further downwardmovement of the pump-rod and mandrel, to actuate the dogs to latch theliner within the flow-pipe.

6. In a pump for deep wells, the combination of a liner, a flow-pipehaving a. bore receiving the liner, a latch-device having movableengaging dogs mounted on the liner to anchor the liner in the flow-pipe,said flow-pipe having socket means to cooperate with the dogs inanchoring the same, actuating members for the dogs with means to movethe dogs into their engaging position, a pump rod with a piston and amandrel having a substantially conical face alignment with the saidsocket means of the adjacent the rod above the piston, engagingflowpipe, said actuating members for the 10 the latch-device andcooperating with the dogs operating upon a further downward actuatingmembers to hold the dogs retractmovement of. thepump-rod to actuate theed in lowering the liner within the flowdogs to latch the liner Withinthe flow-pipe.

pipe, said liner and said flow pipe having Signed at Huntington Beach,Cal., this engaging means for'stop ing the downward 30th day of Sept.1924. movement of the liner w en the dogs are in DONALD FRANK JOHNS.

